Is there a difference between a white Watson hydrocodone 853 pill and yellow Watson hydrocodone 853 pill?

I have rheumatoid arthritis and have tried both. The yellow is stronger (to me) than the white. Yellow 10-325 I need only 2 daily to 4 daily for the white. My pharmacy alternates between the 2. I am not going to refill the whites unless I can't find the yellows. This will probably require some legwork but it'll be worth it.